. studying in science and technology to the second question from the audience, does the debt ceiling still have a practical purpose? could be eliminated without much consequence of? >> does what? >> the debt ceiling. >> no, it doesn't really have -- it's got symbolic value i guess, but no other country i believe, maybe one or two of the countries but i think essentially no other countries in the world have this particular institution. just so everybody understands what it is, the congress appropriates $100, tells the government to spend $100 on whatever, and then it raises $80 in revenue through its tax code. now, there is arithmetic here. so says you've got to borrow $20, right? no. the congress has to give a third row which has 100 minus 80 equals 20. there really is, if the congress is approving spending and its approving taxing, and those two things are not equal, then this kind of logically, there's got to be something to make up the difference and that difference is borrowing. i'm not saying that deficits and debt are a good thing or a blessing that at all but the way to address it i